Storage Transaction

A Storage Transaction is a data transaction that is a storage operation ensuring atomic execution of storage changes to maintain storage consistency and data integrity.

• AKA: Transactional Storage Operation, Atomic Storage Update, Storage ACID Operation.
• Context:
  • It can typically ensure Atomicity through all-or-nothing execution.
  • It can typically maintain Consistency via integrity constraints.
  • It can typically provide Isolation between concurrent operations.
  • It can typically guarantee Durability through persistent commits.
  • It can typically support Rollback Operations for error recovery.
  • ...
  • It can often implement Two-Phase Commit for distributed consistency.
  • It can often use Optimistic Locking for concurrency control.
  • It can often employ Snapshot Isolation for read consistency.
  • It can often leverage Transaction Logs for recovery support.
  • ...
  • It can range from being a Local Storage Transaction to being a Distributed Storage Transaction, depending on its storage scope.
  • It can range from being a Short Storage Transaction to being a Long Storage Transaction, depending on its execution duration.
  • ...
  • It can utilize Write-Ahead Logging for crash recovery.
  • It can employ Lock Managers for resource coordination.
  • It can leverage Transaction Coordinators for distributed execution.
  • ...
• Example(s):
  • File System Transactions, such as:
    • NTFS Transaction supporting transactional file operations.
    • ZFS Transaction with copy-on-write semantics.
    • Btrfs Transaction providing snapshot capability.
  • Object Storage Transactions, such as:
    • S3 Multipart Upload Transaction for atomic object creation.
    • Azure Blob Transaction with lease-based locking.
    • GCS Composite Object Transaction for atomic composition.
  • Block Storage Transactions, such as:
    • SAN Transaction ensuring block-level atomicity.
    • iSCSI Transaction with SCSI command atomicity.
    • NVMe Transaction supporting namespace atomicity.
  • ...
• Counter-Example(s):
  • Best-Effort Storage Write, which lacks atomicity guarantees.
  • Fire-and-Forget Storage Operation, which doesn't ensure completion confirmation.
  • Eventual Consistency Write, which trades immediate consistency for availability.
• See: ACID Transaction, Storage System, Data Consistency, Transaction Processing.

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